D as morning is time for eating, night for sleeping so afternoon
Answer:mental life; observable behavior
Explanation: Mental life has a lot to do with how psychologists focus more on the physiological research in the 1920s and 1960s, but as times goes by, they emphasize more on observable behavior. Because both mental life and observable behavior work together for a good psychological result.
When a factory is running or when driving a car that gives off carbon dioxide and that pollutes the air.
Secondhand smoke is just as dangerous as firsthand smoke, what are your choices?
